AISC D824 2024

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Design Guide 24: Hollow Structural Section Connections (Second Edition)

Published By	Publication Date	Number of Pages
AISC	2024	356

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Description

Design Guide 24, 2nd Ed., provides a much-anticipated update to AISC

PDF Catalog

PDF Pages	PDF Title
1	Hollow Structural Section Connections, 2nd Ed.
3	Inside Cover Page
4	Copyright
5	Authors Acknowledgments Preface
7	Table of Contents
11	Chapter 1 Introduction 1.1 Scope
12	1.1.1 Prominent Design Resources for HSS Connections
14	1.2 Principles of HSS Connection Design
15	1.3 Manufacturing of Hollow Sections 1.3.1 Terminology and Designations
16	1.3.2 Production Methods
18	1.4 Manufacturing Standards and Properties 1.4.1 ASTM A500/A500M 1.4.2 ASTM A1085/A1085M
19	1.4.3 ASTM A1065/A1065M 1.4.4 ASTM A847/A847M
20	1.4.5 ASTM A53/A53M 1.4.6 ASTM A501/A501M 1.4.7 ASTM A618/A618M
21	1.4.8 ASTM A1110/A1110M 1.4.9 ASTM A1112/A1112M 1.4.10 API 5L
22	1.4.11 CAN/CSA G40.20/G40.21
24	1.5 Advantages of HSS 1.5.1 AESS 1.5.2 Torsion 1.5.3 Compression
25	1.5.4 Surface Area 1.5.5 Concrete Filling
26	1.5.6 Resistance to Fluid Flow
27	1.5.7 Cold Bending or Hot Bending
28	1.5.8 Connecting to Steel Castings 1.6 Other Considerations 1.6.1 Galvanizing and Metalizing
29	1.6.2 Notch Toughness
30	1.6.3 Internal Corrosion and Freezing
31	1.6.4 Fire Protection
33	Chapter 2 Limit States for HSS Connections 2.1 Evolution of HSS Connection Design in the AISC Specification
34	2.2 Strength vs. Deformation Limit States
35	2.3 Limit State of Wall Plastification
36	2.3.1 Yield-Line Theory 2.3.2 Rectangular HSS Chord T-, Y-, and Cross‑Connections
39	2.3.3 Rectangular HSS Chord K-Connections 2.3.4 Round HSS Chord Connections
41	2.4 Limit State of Shear Yielding (Punching Shear)
42	2.4.1 Rectangular HSS Chord Connections
43	2.4.2 Round HSS Chord Connections 2.5 Limit State of Local Yielding of Branch Due to Uneven Load Distribution
45	2.6 Limit State of Local Yielding of Chord Side Walls
46	2.7 Limit State of Local Crippling of Chord Side Walls
47	2.8 Limit State of Buckling of Chord Side Walls
48	2.9 Limit State of Shearing of Chord Cross Section
49	2.10 Limit State of Local Buckling of Chord Connecting Face 2.11 Limit State of Shear Yielding of Overlapped Branches
50	2.12 Limit State of Chord Distortional Failure
51	2.13 Design Outside the Limits of Applicability
53	Chapter 3 Welding 3.1 Types of HSS Welds 3.1.1 Fillet Welds
56	3.1.2 PJP Groove Welds
57	3.1.3 PJP Groove Welds Reinforced with Fillet Welds 3.1.4 Flare-Bevel and Flare-V Groove Welds
60	3.1.5 CJP Groove Welds
61	3.2 Weld Inspection
62	3.3 Cutting and Welding Overlapping Hollow Sections
65	3.4 Fillet Welds in Shear Connections
67	3.5 Weld Effective Lengths 3.5.1 Welds of Plates and Branches to Rectangular HSS
70	3.5.2 Welds between Round HSS
72	3.6 Welded Joint Design Examples Example 3.1—Skewed Fillet Welds
73	Example 3.2—Fillet Weld Size in Shear Connection
76	Example 3.3—Transverse Weld to a Square or Rectangular HSS
78	Example 3.4—Welds to a Rectangular HSS Overlapped K-Connection Using Effective Lengths
82	Example 3.5—Welds to a Rectangular HSS Overlapped K-Connection to Develop Branch Capacity
85	Chapter 4 Mechanical Fasteners and Bolted Joints
86	4.1 Bolted HSS Limit States 4.1.1 Tension Pull-Out 4.1.2 HSS Wall Distortion
87	4.2 Fasteners in Shear 4.3 Fasteners in Tension 4.3.1 Prying Action
88	4.4 Fasteners in Combined Shear and Tension
90	4.5 Other Mechanical Fasteners 4.5.1 Through Bolts
91	4.5.2 Blind Bolts
92	4.5.3 Threaded Studs 4.5.4 Powder-Actuated Fasteners 4.5.5 Screws
93	4.6 Bolted Joint Design Examples Example 4.1— Through Bolts in Shear
96	Example 4.2—Threaded Studs in Tension
100	Example 4.3—Bolts in Tension
105	Chapter 5 Shear Connections 5.1 Applicable Limit States 5.1.1 Shear Yielding 5.1.2 Yield Line Mechanism
106	5.2 Wide-Flange Beam-to-HSS Column Connections 5.2.1 Single-Plate Connections
107	5.2.2 Single-Angle Connections
108	5.2.3 Double-Angle Connections 5.2.4 WT Connections
109	5.2.5 Unstiffened Seat Connections 5.2.6 Stiffened Seat Connections 5.2.7 Through-Plate Connections
111	5.2.8 Shear Connections to Round HSS 5.3 High Shear Load Connections
112	5.4 HSS Beam-to-HSS Column Connections
113	5.5 Shear Connection Design Examples Example 5.1—Single Plate-to-HSS Connection
118	Example 5.2—Double Angle-to-Narrow HSS Connection
124	Example 5.3—Through Plate-to-HSS Connection
131	Chapter 6 Moment Connections
132	6.1 Continuous Beam Over HSS Column
133	6.2 External Diaphragm Plate (Cut-Out Plate) Flange-Plated 6.3 Welded Tee Flange
134	6.4 Directly Welded
135	6.5 Through-Plate Flange-Plated
136	6.6 Internal Diaphragm Plate
137	6.7 Moment Connection Design Examples EXAMPLE 6.1—Beam over HSS Column Connection
144	EXAMPLE 6.2—External Diaphragm Plate (Cut-Out Plate) Flange-Plated Connection
155	EXAMPLE 6.3—Directly Welded Connection
161	EXAMPLE 6.4—Through-Plate Flange-Plated Connection
170	EXAMPLE 6.5—Welded WT Flange Connection
183	Chapter 7 Tension and Compression Connections 7.1 End-Tee Connections
186	7.2 Slotted HSS-to-Gusset Plate Connections
188	7.3 End-Plate Connections
190	7.3.1 End Plate on Round HSS
191	7.3.2 End Plate on Rectangular HSS with Bolts on Four Sides
194	7.3.3 End Plate on Rectangular HSS with Bolts on Two Sides
195	7.4 Sandwich Gusset Plates 7.5 Tension and Compression Connection Design Examples EXAMPLE 7.1—End-Tee Connection
207	EXAMPLE 7.2—Slotted Round HSS-to-Gusset Plate Connection
214	EXAMPLE 7.3—End Plate on Round HSS Connection
219	EXAMPLE 7.4—End Plate on Rectangular HSS Connection (Bolts on Four Sides)
225	Chapter 8 Line Loads and Concentrated Forces on HSS 8.1 Scope And Basis
226	8.2 Limit States 8.2.1 Branch Plates-to-Round HSS
227	8.2.2 Branch Plates-to-Rectangular HSS
230	8.2.3 Through Plates-to-Round HSS
231	8.2.4 Through Plates and Stiffened Plates to Rectangular HSS
232	8.3 Branch-Plate and Through-Plate Connection Available Strength Tables 8.4 Cap-Plate Connections 8.4.1 Closure of an Open End
237	8.4.2 Axial Compression or Tension on a Cap Plate from a Tee-Stub 8.4.3 Compression on a Cap Plate from a Beam, Girder, or Joist
238	8.5 Line Load Connection Design Examples EXAMPLE 8.1—Longitudinal Branch-Plate/Through-Plate Connection with Rectangular HSS
242	EXAMPLE 8.2—Wide-Flange Beam-to-Round HSS Column Moment Connection
246	EXAMPLE 8.3—Transverse Branch-Plate Connection with Rectangular HSS
251	Chapter 9 HSS-to-HSS Truss Connections 9.1 Scope and Basis
252	9.2 Notation, Terminology, and Limit States 9.2.1 Gap, Overlap, and Eccentricity in K-Connections
253	9.2.2 Limit States
254	9.3 Connection Classification
256	9.4 Truss Modeling and Member Design
257	9.5 Round HSS Branches to a Rectangular HSS Chord
259	9.6 KT-Connections 9.6.1 Methods of Analysis
262	9.7 HSS-to-HSS Truss Connection Available Strength Tables 9.8 Multi-Planar Connections
270	9.8.1 XX-Connection Design
271	9.8.2 KK-Connection Design
273	9.8.3 Fabrication Aspects with KK-Connections
274	9.9 Truss Connection Design Examples EXAMPLE 9.1—Y-Connection with Round HSS
278	EXAMPLE 9.2—Overlapped K-Connection with Round HSS
282	EXAMPLE 9.3—Cross-Connection with Rectangular HSS
287	EXAMPLE 9.4—Overlapped K-Connection with Rectangular HSS
293	EXAMPLE 9.5—Gapped K-Connection with Square HSS and Unbalanced Branch Loads
302	EXAMPLE 9.6—Overlapped KT-Connection with Square HSS
309	Chapter 10 HSS-to-HSS Moment Connections 10.1 Scope and Basis 10.1.1 Vierendeel Connections
310	10.2 Limit States 10.2.1 In-Plane Bending of Branch(es)
314	10.2.2 Out-of-Plane Bending of Branch(es)
317	10.3 HSS-to-HSS Moment Connection Available Strength Tables
321	10.4 HSS-to-HSS Moment Connection Design Examples EXAMPLE 10.1—Cross-Connection with Round HSS under Branch In-Plane Bending
324	EXAMPLE 10.2—Vierendeel Connection with Square HSS under Branch In-Plane Bending
331	EXAMPLE 10.3—Cross-Connection with Rectangular HSS under Branch Out-of-Plane Bending
334	EXAMPLE 10.4—T-Connection with Rectangular HSS under Branch Out-of-Plane Bending
339	Symbols
345	References
356	Back Cover